hydraulic steel tubing 

processing form : cold-drawn,cold-rolled,hone,SRB 
seamless steel tube for hydraulic and pneumatic use. 
hydraulic steel tubing

Outer diameter :38mm-325mm

 Wall thickness:1.5mm-50mm

 Standard:GB/T17396-1998

 Material:27SiMn.

 Application:Hydraulic support, hydraulic prop

 Packing:Caps on two ends ,wrapped with strong steel strip ,or according to the customers'requirements.

Hydraulic Steel Tube 
Precision: H8, H9, H10 
Processing form: Cold-drawn, Cold-rolled, Hone, SRB

 Hydraulic Steel Tube

Seamless steel tube for hydraulic and pneumatic cylinder use

Processing mode

Diameter

Length

Linearity

Precision

Roughness of inner hole

Cold rolling

30-100

≤12M

0.3-1.0

H8-H10

0.4-1.6

Cold drawn

30-250

≤12M

H8-H10

0.8-1.6

Grinding

40-500

≤12M

1000

H8-H9

0.4-0.8

Rolling

40-400

≤7M

H8

0.4

 

Mechanical performance

 

Hydraulic Steel Tubing

 

Model

Item

Cold drawn (rolling) tube

metallic cut pipe

20

Intensity of tensionσbN/mm2

≥510

≥390

Elongation rate δ5%

≥5

≥20

45

Intensity of tension σbN/mm2

≥647

≥590

Elongation rateδ5%

≥4

≥4

16Mn

Intensity of tensionσbN/mm2

≥640

 

Elongation rateδ5%

≥10

 

27SiMn

Intensity of tensionσbN/mm2

≥840

 

Elongation rateδ5%

≥7.5

 

 Size tolerance

Inner diameter

 

warp of wall thickness

H8

H9

H10

30

+0.033

0

+0.052

0

+0.084

0

±5%

30-50

+0.039

0

+0.062

0

+0.100

0

50-80

+0.046

0

+0.074

0

+0.120

0

80-120

+0.054

0

+0.087

0

+0.140

0

120-180

+0.063

0

+0.100

0

+0.160

0

180-250

+0.072

0

+0.115

0

+0.185

0

250-315

+0.081

0

+0.130

0

+0.210

0

315-400

+0.089

0

+0.140

0

+0.230

0

 
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